Pulling one repository into a subtree of another and pushing to SVN.

gistfile1.sh

git remote add -f tp file:///Volumes/Sources/tp.git/
INITIAL_COMMIT=`git rev-list tp/master --reverse | head -n1`
git checkout -b nb-merge
for MCH in `git rev-list --reverse $INITIAL_COMMIT..tp/master` 
do
  git merge --squash -s subtree --no-commit $MCH && git commit -C $MCH
done
git filter-branch --msg-filter "sed 's/^/[new-branch] /'" master..HEAD
git svn branch new-branch -m "[new-branch] Creating branch."
git rebase refs/remotes/new-branch
git svn dcommit